Can be sterilized in the microwave and stored in the case after sterilization. [Feature 1] 2-in-1 Functions as both a microwave sterilizer and a hygienic case for baby bottles. With the "Sterilizing Jo-zu & Hygienic Case," sterilization and storage are all in one! [Feature 2] Easy sterilization in the microwave Simply put the case with water into the microwave and steam sterilize in just 5 minutes. You can steam sterilize 4 baby bottles at the same time. [Feature 3] Hygienic case that holds 4 baby bottles Holds 4 baby bottles of 240ml (for standard-neck bottles) and 4 nipples. You can store them as is after sterilization, keeping them hygienic. ■Target age: From 0 months ■Size: W253 x D125 x H205mm ■Weight: 585g ■Remarks: Material: Main body, cover, nipple case / PP [Compatible microwaves] General household microwave ovens (output 500-700W) Width 26.5cm or more x Depth 26.5cm or more x Height 13.0cm or more (dimensions from the microwave plate to the top surface) * Please note that some microwave ovens have protrusions inside the oven. Can also be used with flat-type microwave ovens.